They're still a bit young to seriously join the roving gang of elementary schoolers on bikes and scooters. But when the games involve running through the woodsy common areas with plastic guns and gun-like sticks, the possibility for blending in with the crowd becomes more likely.
And as usual, my first concern is how my five year old with communication delays and all of the awkward social behaviors that accompany them will handle this. I worry that Oliver will opt to disengage and continue to play by himself in the dirt. I worry that he'll try to play with the other kids but be rejected. I worry that he'll manage to stay with the group but take their game too far and come across as aggressive.